JPS63277938A - Heat-ray type detector - Google Patents
Heat-ray type detectorInfo
- Publication number
- JPS63277938A JPS63277938A JP62113129A JP11312987A JPS63277938A JP S63277938 A JPS63277938 A JP S63277938A JP 62113129 A JP62113129 A JP 62113129A JP 11312987 A JP11312987 A JP 11312987A JP S63277938 A JPS63277938 A JP S63277938A
- Authority
- JP
- Japan
- Prior art keywords
- fresnel lens
- heat
- head cover
- area
- fresnel lenses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 15
- 238000000465 moulding Methods 0.000 abstract description 8
- 239000004698 Polyethylene Substances 0.000 abstract description 4
- -1 polyethylene Polymers 0.000 abstract description 4
- 229920000573 polyethylene Polymers 0.000 abstract description 4
- 239000005357 flat glass Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0411—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0437—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using masks, aperture plates, spatial light modulators, spatial filters, e.g. reflective filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/07—Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0806—Focusing or collimating elements, e.g. lenses or concave mirrors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0831—Masks; Aperture plates; Spatial light modulators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0266—Field-of-view determination; Aiming or pointing of a photometer; Adjusting alignment; Encoding angular position; Size of the measurement area; Position tracking; Photodetection involving different fields of view for a single detector
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Burglar Alarm Systems (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は検知エリア内の被検体、特に不審者、火災の際
の燻炭等から発っせられる熱線を検知して、異常を１知
、警報する熱線式検知器に於いて、熱線センサー前面に
集光器を窓状に配列することにより、従来のように検知
器本体、または集光器の向きを変えることなく広域、広
角度の検知エリアを監視できる熱線式検知器に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention detects heat rays emitted from objects within the detection area, particularly suspicious persons, smoky charcoal, etc. during a fire, and detects abnormalities. In hot-wire type alarm detectors, by arranging the concentrator in a window shape in front of the heat-ray sensor, it is possible to detect a wide area and wide angle without changing the direction of the detector body or the condenser as in conventional methods. Concerning a hot wire detector that can monitor an area.
従来例に於いて広域を監視できる熱線式検知器としては
、特開昭６１−１２６４３４のように、集光器を摺動さ
せる方式のもの、及び実開昭６１−１１０１２８のよう
に、集光器を平面的に複数個連設して二次元的に配置す
る方式のものが知られている。Conventional hot-wire type detectors that can monitor a wide area include those that use a sliding condenser as in Japanese Patent Application Laid-open No. 61-126434, and those that use a sliding condenser as in Japanese Utility Model Application Laid-Open No. 61-110128. A method is known in which a plurality of vessels are arranged two-dimensionally in series in a plane.
前者はフレネルレンズでなる集光器そのものの監視検知
エリアは狭いが、この欠点を克服するために、検知器本
体の位置は固定したままで集光器を熱線センサー前面で
摺動し、検知エリアを可変にする方式であるが、集光器
のセット位置に於ける検知エリアだけしか監視できない
為にセットと共に、正確な機能調整をしなければならな
いという欠点を内包している。In the former, the monitoring detection area of the condenser itself, which is made of a Fresnel lens, is small, but in order to overcome this drawback, the condenser is slid in front of the hot ray sensor while the position of the detector body remains fixed, thereby increasing the detection area. However, since only the detection area at the set position of the condenser can be monitored, it has the disadvantage that accurate function adjustment must be made along with the set.
後者は複数個のフレネルレンズでなる集光器を平面的に
連設したもので、集光器を変位せずに広角度の検知エリ
アを監視できる利点はあるが、監視検知エリアが狭い幅
の面でしか捉えられない為にセットは正確な機能調整を
個々に要求されるという欠点が存在する。The latter has the advantage of being able to monitor a wide-angle detection area without displacing the condenser, and has the advantage of being able to monitor a wide-angle detection area without displacing the condenser. Since it can only be captured in terms of surfaces, the set has the disadvantage that precise functional adjustment is required individually.
更に、構造的にフレネルレンズでなる集光器を覆うよう
に透光性のカバーを設けている為に、検知器容積が大き
くならざるを得す構成も複雑となる。Furthermore, since a light-transmitting cover is provided to cover the condenser made of a Fresnel lens, the detector volume is forced to be large and the configuration becomes complicated.
また、両側ともフレネルレンズ群成形時は平面的設計を
施し、成形後に折り曲げてケーシング等に装着して、監
視し得るレンズ群が構成される為、フレネルレンズ群の
設計の際に平面状態形状と取り付は状態形状９両設計を
行う必要があり、歪み等を見込んで設計しなければなら
ないので、高水準の精度が要求される。In addition, when molding the Fresnel lens group on both sides, a planar design is applied, and after molding, it is bent and attached to a casing etc. to form a lens group that can be monitored. Installation requires a nine-car state-shape design, and the design must take into account distortion, etc., so a high level of precision is required.
従来例はいずれもフレネルレンズでなる集光器とケーシ
ングが別部材であるため組み立て作業の煩雑さを回避し
得ない。In all conventional examples, since the condenser made of a Fresnel lens and the casing are separate members, it is impossible to avoid the complexity of assembly work.
上記に述べた摺動方式は集光器の位置を決定する警備担
当者の予想検知エリア内に被検体が侵入した場合は有効
であるが、集光器のセット位置が不適当である時は被検
体を見逃す場合が想定され、１００％の蓋然性を期待し
得ない。The sliding method described above is effective when a subject enters the expected detection area of the security personnel who determines the position of the condenser, but when the set position of the condenser is inappropriate. It is assumed that the subject may be missed, and a 100% probability cannot be expected.
更に、人為的に集光器の位置を選択せねばならず、効果
を確実にする為には常時、熱線式検知器を管理する人員
が必要となり無駄が多い。Furthermore, the position of the condenser must be selected manually, and in order to ensure effectiveness, a person is required to constantly manage the hot-wire detector, which is wasteful.
一方、集光器を連設する方式のものは、平面的に広角度
を監視することは可能であるが、立体的に広域を監視す
ることは不可能である。即ち、集光器が床面に垂直方向
に連設されている場合は集光器の前方、垂直面にある程
度の幅を持たせた範囲の検知エリアは監視できるが、垂
直面を外れる水平面方向は監視できないという問題点が
存在する。On the other hand, with a system in which condensers are installed in series, it is possible to monitor a wide angle two-dimensionally, but it is impossible to monitor a wide area three-dimensionally. In other words, if the condenser is installed vertically on the floor, the detection area in front of the concentrator and within a certain width in the vertical plane can be monitored, but the detection area in the horizontal plane away from the vertical plane can be monitored. The problem is that it cannot be monitored.
従って、実際には狭い検知エリアの検知器を複数用意し
、各々の検知エリアを重複しないよう全体を監視するよ
うにフレネルレンズでなる集光器の所要機能調整を行っ
て、実用するという面倒を要した。Therefore, in practice, multiple detectors with narrow detection areas are prepared, and the required functions of the Fresnel lens condenser are adjusted to monitor the entire area so that each detection area does not overlap. It took.
上記問題点を克服する為に、本発明では従来、熱線セン
サー（１）前面開口部に取り付ける方式が採られてきた
フレネルレンズ（２）をヘッドカバー（３）と一体のま
ま金型成形し、第１図に示すように、被検体移動可能エ
リアを総て監視できるように立体的にフレネルレンズ群
を形成し、熱線センサー（１）前面にフレネルレンズ（
２）を建築物窓ガラス状に複数個配列した。In order to overcome the above problems, in the present invention, the Fresnel lens (2), which has conventionally been attached to the front opening of the heat ray sensor (1), is molded integrally with the head cover (3). As shown in Figure 1, a Fresnel lens group is formed three-dimensionally to monitor the entire area in which the subject can move, and a Fresnel lens (
A plurality of 2) were arranged in the shape of building window glass.
更に、金型成形する際にフレネルレンズを埋め込む位置
を、被検体移動可能エリアに合せて選択することにより
、同様に不検知ないし誤報を少なくする手段を講じた。Furthermore, by selecting the position where the Fresnel lens is embedded during mold molding in accordance with the area in which the subject can move, a measure was taken to similarly reduce non-detection or false alarms.
上記、本発明の熱線式検知器が実効を保持する為には、
検知器の感度が従来品と同等であるか、それを凌駕する
必要がある。In order for the above-mentioned hot wire type detector of the present invention to maintain its effectiveness,
The sensitivity of the detector must be equal to or exceed that of conventional products.
そこで熱線センサーとして、従来品と同一の焦電素子、
同一のアンプゲイン、同一熱源を用いてその出力を比較
したところ、本発明のフレネルレンズの方が高感度であ
ることが確認された。Therefore, as a heat ray sensor, we used the same pyroelectric element as the conventional product,
When the outputs were compared using the same amplifier gain and the same heat source, it was confirmed that the Fresnel lens of the present invention has higher sensitivity.
また、熱線式検知器をコスト面から考察すると、フレネ
ルレンズの受熱線面積が小さい程有利であるが、フレネ
ルレンズに盲シールを貼って、種々の面積に於ける出力
デーダを集める事により、３０〜２００ｍｍ”を中心と
する範囲、好ましくは１４４ｍｎ？ （１２ｍｍＸ ｌ
２ｎ＋）で、従来品熱線式検知器の最長ビーム用ミラ
ーと同等の出力を得られることが確認された。フレネル
レンズの材質は、これも種々の樹脂を比較し、感度、コ
ストの両面から考慮してポリエチレンを採用したが、当
然その他の樹脂も採用し得る。Also, when considering the cost of a hot-wire type detector, the smaller the heat-receiving area of the Fresnel lens is, the more advantageous it is. ~200mm”, preferably 144mm? (12mmX l
2n+), it was confirmed that an output equivalent to that of the longest beam mirror of a conventional hot-wire detector could be obtained. As for the material of the Fresnel lens, we also compared various resins and selected polyethylene in consideration of both sensitivity and cost, but of course other resins may also be used.
本発明の実施例を以下に詳述するが、フレネルレンズの
配列法、使用枚数、材質、ヘッドカバーの形状、熱線セ
ンサーの使用数等の実施条件は本実施例に限定されない
のは当然の事である。Examples of the present invention will be described in detail below, but it goes without saying that implementation conditions such as the arrangement method of Fresnel lenses, the number of lenses used, the material, the shape of the head cover, the number of heat ray sensors used, etc. are not limited to this example. be.
第１図←示すような球面状のポリエチレン製ヘッドカバ
ー（３）を金型成形により、フレネルレンズ（２）と一
体となったまま製作する。フレネルレンズ（２）は、ヘ
ッドカバー（３）の外側に取り付けても、内側に取り付
けてもよい。フレネルレン〆（２）をヘッドカバー（３
）の内側に取り付けた方が好ましい。ヘッドカバー（３
）の内側にフレネルレンズ（２）を取り付けると、フレ
ネルレンズ（２）の外側から窓の溝にほこりが溜まるこ
とを防止でき、窓が見えないだけでなく美観を保てる。A spherical polyethylene head cover (3) as shown in Figure 1 is manufactured by molding while being integrated with the Fresnel lens (2). The Fresnel lens (2) may be attached to the outside or inside of the head cover (3). Attach the Fresnel lens (2) to the head cover (3)
) is preferable. Head cover (3
) If you attach the Fresnel lens (2) inside the window, you can prevent dust from accumulating in the groove of the window from the outside of the Fresnel lens (2), which not only prevents you from seeing the window but also maintains its aesthetic appearance.
ポリエチレン製ヘッドカバー（３）の内側にフレネルレ
ンズ（２）を一体成形した。A Fresnel lens (2) was integrally molded inside the polyethylene head cover (3).
その結果として、ヘッドカバー（３）の内側にフレネル
レンズ（２）を成形したことにより、成形時に出るパリ
が外側に出ることがなく、更にフレネルレンズ（２）自
体も外側に出ないので見栄えが良い。As a result, by molding the Fresnel lens (2) inside the head cover (3), the particles that come out during molding do not come out, and the Fresnel lens (2) itself does not come out, so it looks good. .
即ち、製造方法は、球面状へラドカバー（３）に対応す
る形状のベース金型を造り、ヘッドカバ（３）にフレネ
ルレンズ（２）を埋め込む位置に該当するベース金型表
面から内部に、四角柱形状の孔を開ける。孔の形状はフ
レネルレンズ（２）の形状に従って任意に選択できる。That is, the manufacturing method is to make a base mold with a shape corresponding to the spherical head cover (3), and to insert a square prism into the inside from the base mold surface corresponding to the position where the Fresnel lens (2) is embedded in the head cover (3). Drill a hole in the shape. The shape of the hole can be arbitrarily selected according to the shape of the Fresnel lens (2).
これとは別に、表面にフレネルレンズ（２）の裏面形状
を転写し、前記ベース金型に開削した四角柱に密接して
埋め込めるような四角柱形状の部分金型を製作する。こ
の際に、印刷活字様にベース金型に部分金型を埋め込ん
だ時に、フレネルレンズ（２）裏面を転写した部分金型
表面がベース金型表面球面と一致するように、凹凸の発
生を抑えて全金型をデザインする。Separately, a partial mold in the shape of a square prism is manufactured by transferring the shape of the back surface of the Fresnel lens (2) onto the front surface and embedding the mold in close contact with the square prism cut in the base mold. At this time, when the partial mold is embedded in the base mold like printing type, the occurrence of unevenness is suppressed so that the surface of the partial mold onto which the back surface of the Fresnel lens (2) is transferred matches the spherical surface of the base mold. Design all molds.
金型全体の外観は第１図と同等で、フレネルレンズ（２
）に相当する位置表面に、波形歯型が存在することにな
る。The overall appearance of the mold is the same as that shown in Figure 1, with a Fresnel lens (2
), a wavy tooth pattern will exist on the surface at a position corresponding to
また、焦電素子（１）を担持する基板（５）にヘッドカ
バー（３）を填め込む円形枠（４）も同一金型により一
体成形する。Furthermore, a circular frame (4) into which the head cover (3) is fitted to the substrate (5) carrying the pyroelectric element (1) is also integrally molded using the same mold.
上記金型によって製造されたフレネルレンズ（２）は当
然の事として球面フレネルレンズを構成する。The Fresnel lens (2) manufactured by the above mold naturally constitutes a spherical Fresnel lens.
球面フレネルレンズ（２）と一体となったヘッドカバー
（３）の円形枠（４）に、中央に焦電素子（１）を担持
した円形基板（５）を装着し、本発明の熱線式検知器全
体が構築されることになる。A circular substrate (5) carrying a pyroelectric element (1) in the center is attached to a circular frame (4) of a head cover (3) integrated with a spherical Fresnel lens (2), and the heat-ray detector of the present invention is constructed. The whole thing will be built.
以上により製造された本発明の熱線式検知器の球面フレ
ネルレンズ（２）の面積は前述の通り１２■■Ｘ１２ｍ
ｍとし、球面フレネルレンズ（２）の焦点距離は熱線式
検知器本体の大きさを考慮して４３１１１とした。The area of the spherical Fresnel lens (2) of the heat-ray detector of the present invention manufactured as described above is 12 x 12 m as described above.
m, and the focal length of the spherical Fresnel lens (2) was set to 43111 in consideration of the size of the hot ray detector body.
該熱線式検知器を実施する場合に、焦電素子（１）と被
検体を結ぶ中心線から球面フレネルレンズ（２）がどの
程度ずれても検知能力が存在するか、という事が問題に
なる。そこで第１表に示す如く、焦電素子（１）と被検
体の距離が約１０ｍある場合の、球面フレネルレンズ（
２）の中心線からのずれ距なとその位置での出力の相関
を探査した。When implementing this hot-wire type detector, the question is whether the detection ability exists no matter how far the spherical Fresnel lens (2) deviates from the center line connecting the pyroelectric element (1) and the subject. . Therefore, as shown in Table 1, when the distance between the pyroelectric element (1) and the subject is approximately 10 m, the spherical Fresnel lens (
2) We investigated the correlation between the deviation distance from the center line and the output at that position.
球面フレネルレンズ（２）の面積は１２鶴×１２龍とし
、被検体に対し縦、及び横に配置した場合について従来
品と比較した。The area of the spherical Fresnel lens (2) was 12 cranes x 12 dragons, and it was compared with a conventional product when placed vertically and horizontally with respect to the subject.
その結果、第１表の如く縦配置で、球面フレネルレンズ
（２）のずれが±５龍までは全く出力の実質的低下は認
められず、本熱線式検知器のヘッドカバー（３）上フレ
ネルレンズ（２）の配置間隔は最大限９鶴まで許容され
ることが明らかとなった。As a result, when the spherical Fresnel lens (2) is disposed vertically as shown in Table 1, no substantial decrease in output was observed when the deviation of the spherical Fresnel lens (2) was up to ±5 mm. It has become clear that the arrangement interval in (2) is allowed up to a maximum of 9 cranes.
第１表
〔発明の効果〕
本発明の、熱線式検知器を使用する事により、従来より
広域からの熱線を１００％の蓋然性で捕捉する事ができ
る。この際に、検知エリアが広がることによりシグナル
が分散して焦電素子の出力が減少するという現象は見ら
れず、従来と同感度以上で被検体が捉えられるという事
が確認された。Table 1 [Effects of the Invention] By using the heat ray detector of the present invention, heat rays from a wider area than before can be captured with 100% probability. At this time, there was no phenomenon in which the output of the pyroelectric element was reduced due to signal dispersion due to the expansion of the detection area, and it was confirmed that the object could be captured with the same or higher sensitivity than before.
また、本発明に依る熱線式検知器を天井に設置すること
により、下方空間全域のシグナルが検知されることが確
認された。Furthermore, it was confirmed that by installing the hot wire detector according to the present invention on the ceiling, signals could be detected throughout the space below.
更に、垂直壁上方に、本発明に依る熱線式検知器を設置
することにより、下方空間全域は当然のこと、上方空間
全域のシグナルも検知されることが確認され、火災の際
の天井からの燻炭にも有効に作動することが確かめられ
た。Furthermore, it has been confirmed that by installing the hot wire detector according to the present invention above a vertical wall, signals can be detected not only in the entire area below, but also in the entire area above. It was confirmed that it also works effectively with smoky charcoal.
また、ヘッドカバーとフレネルレンズとを一体型とする
ことで、ヘッドカバーとフレネルレンズの膨張率が異な
る為や機械的振動等により両者の間に隙間ができて、風
等による大気の流れえ侵入することによって起こる誤報
ないし機能の不安定原因のひとつを取り除けるようにし
た。In addition, by integrating the head cover and Fresnel lens, a gap may be created between them due to different expansion coefficients between the head cover and Fresnel lens or due to mechanical vibrations, etc., and air flow due to wind etc. may enter. We have made it possible to eliminate one of the causes of false alarms or unstable functions caused by this.
また、フレネルレンズとケーシングとを一体成形するこ
とにより、組立工程を簡略化し、小型軽量化を図ると共
に、取付けた状態でのフレネルレンズ群の設けを考慮す
るだけで良いので簡便製造を可能ならしめた。In addition, by integrally molding the Fresnel lens and the casing, the assembly process is simplified, the size and weight are reduced, and it is only necessary to consider the installation of the Fresnel lens group in the attached state, allowing for easy manufacturing. Ta.
第１図は本発明に係る熱線式検知器の側面図、第２図は
本発明に係る熱線式検知器の正面図を表す。
１、熱線センサー（焦電素子）
２、集光器（フレネルレンズ）
３、ヘッドカバー
４、ヘッドカバー円形枠
５、基板FIG. 1 is a side view of a hot wire type detector according to the present invention, and FIG. 2 is a front view of the hot wire type detector according to the present invention. 1. Heat ray sensor (pyroelectric element) 2. Concentrator (Fresnel lens) 3. Head cover 4. Head cover circular frame 5. Substrate
Claims (1)
器に於いて、熱線センサー前面を覆う集光器がカバーヘ
ッドと一体となって成形されて、集光器としての役割と
センサーのカバーとしての役割を兼備し、熱線センサー
前面の全範囲の所要個所に検知域に対応する複数個の集
光器が窓状に配列されて、広角度からの熱線をセンサー
に伝達する能力を持つことを特徴とする熱線式検知器。In a hot-wire type detector consisting of a heat-ray sensor, a concentrator, and a casing, the concentrator that covers the front of the heat-ray sensor is molded integrally with the cover head, and serves both as a concentrator and as a cover for the sensor. It is characterized by having the ability to transmit heat rays from a wide angle to the sensor by having multiple concentrators arranged in a window shape at required locations in front of the heat ray sensor, corresponding to the detection area. A hot wire detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62113129A JPS63277938A (en) | 1987-05-09 | 1987-05-09 | Heat-ray type detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62113129A JPS63277938A (en) | 1987-05-09 | 1987-05-09 | Heat-ray type detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63277938A true JPS63277938A (en) | 1988-11-15 |
Family
ID=14604277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62113129A Pending JPS63277938A (en) | 1987-05-09 | 1987-05-09 | Heat-ray type detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63277938A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008304384A (en) * | 2007-06-08 | 2008-12-18 | Panasonic Electric Works Co Ltd | Infrared light detector |
| CN102650549A (en) * | 2011-06-29 | 2012-08-29 | 北京理工大学 | FPA (focal plane array)-based uncooled thermal imaging optical system modulated by point grid beamsplitter |
| EP2752688A1 (en) * | 2013-01-04 | 2014-07-09 | Samsung Electronics Co., Ltd | Fresnel lens and pyroelectricity sensor module including the same |
| CN108534902A (en) * | 2018-03-29 | 2018-09-14 | 上海空间电源研究所 | A kind of round-the-clock self energizing target reconnaissance device based on infrared response |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845758A (en) * | 1981-09-14 | 1983-03-17 | Kobe Steel Ltd | Separation and concentration of bastnaesite |
-
1987
- 1987-05-09 JP JP62113129A patent/JPS63277938A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845758A (en) * | 1981-09-14 | 1983-03-17 | Kobe Steel Ltd | Separation and concentration of bastnaesite |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008304384A (en) * | 2007-06-08 | 2008-12-18 | Panasonic Electric Works Co Ltd | Infrared light detector |
| CN102650549A (en) * | 2011-06-29 | 2012-08-29 | 北京理工大学 | FPA (focal plane array)-based uncooled thermal imaging optical system modulated by point grid beamsplitter |
| CN102650549B (en) * | 2011-06-29 | 2017-02-15 | 北京理工大学 | FPA (focal plane array)-based uncooled thermal imaging optical system modulated by point grid beamsplitter |
| EP2752688A1 (en) * | 2013-01-04 | 2014-07-09 | Samsung Electronics Co., Ltd | Fresnel lens and pyroelectricity sensor module including the same |
| US9453945B2 (en) | 2013-01-04 | 2016-09-27 | Samsung Electronics Co., Ltd. | Fresnel lens and pyroelectricity sensor module including the same |
| CN108534902A (en) * | 2018-03-29 | 2018-09-14 | 上海空间电源研究所 | A kind of round-the-clock self energizing target reconnaissance device based on infrared response |
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